| 太平洋中部沉积物中碳酸盐、氧化钙及氧化镁的分布特征 |
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| 引用本文： | 国家海洋局第三海洋研究所组.太平洋中部沉积物中碳酸盐、氧化钙及氧化镁的分布特征[J].海洋科学,1983,7(3):19-23. |
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| 作者姓名： | 国家海洋局第三海洋研究所组 |
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| 作者单位： | 国家海洋局第三海洋研究所 |
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| 摘 要： | 研究深海沉积物中化学元素的组成及其分布规律,将对海洋沉积物的组成、沉积过程以及辨别沉积岩和现代松散堆积物的形成环境等提供一定的依据。为此,我们曾对我国1976—1979年在太平洋中部所采集的30个表层沉积样和两个柱状样进行了碳酸盐、CaO、MgO等项化学分析测定工作。分析结果表明,这些元素与水深、沉积物类型及生物贝壳、微体生物等有密切关系。而水深、沉积物的类型是这些元素分布特征的重要控制因素。
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DISTRIBUTION CHARACTERISTICS OF CARBONATE, MgO, CaO IN THE SEDIMENTS FROM THE CENTRAL PACIFIC |
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| Abstract: | This paper is a preliminary study of the distribution characteristics of carbonate, MgO, CaO in the sediments from the central pacific. In the investigation area, the depth of water and type of sediments are important controlling factors on the distribution of carbonate, MgO, CaO in sediment. In the surface sediments, the content of carbonate and CaO decreased with the increase of the depth of water, but the plot of the MgO content against the depth of water appeared to be bell shaped. "The dissolution transition layer " and "Carbonate compensation depth(CCD)"occurred at the depth of about 3000-3500m and 5000m. |
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